Support.
A question, a bug, an idea? Write to contact@twentyconsultancy.com.
We reply within a few business days, in French or English. Since the app sends us nothing, no error report reaches us automatically: describe what you were doing, your iPhone model, your iOS version and the AI model you were using.
Getting started
- Open the app and go to the models tab.
- Download a model suited to your iPhone (see the table below). This is the only time the app connects.
- Go back to the chat and type. You can switch to airplane mode: everything keeps working.
Which model to choose
A model too heavy for your iPhone slows the app down or makes it quit. If in doubt, pick the model just below.
| Model | Size | Recommended iPhone |
|---|---|---|
| Gemma 4 E4B | 4.6 GB | iPhone 18 Pro Max, 18 Pro, 17 Pro Max, 17 Pro, Air |
| Gemma 4 E4B · mobile | 3.2 GB | iPhone 18 Pro Max → 15 Pro |
| Gemma 4 E2B | 2.8 GB | iPhone 18 Pro Max → 15 Pro |
| Gemma 3 4B · QAT | 2.5 GB | iPhone 18 Pro Max → 14, plus 13 Pro, 12 Pro |
| Gemma 4 E2B · mobile | 2.2 GB | iPhone 18 Pro Max → 14, plus 13 Pro, 12 Pro |
| Gemma 3 1B | 810 MB | iPhone 18 Pro Max → XS |
| Gemma 3 270M | 290 MB | iPhone 18 Pro Max → XR |
Common issues
The app slows down or closes on its own
The model is probably too heavy for your iPhone. Delete it from the models tab and pick the one on the next row of the table.
The download stops or fails
Models weigh from 290 MB to 4.6 GB. Use Wi-Fi, keep the app in the foreground, and check that there is enough free space on the iPhone. Restarting the download resumes where it stopped.
My conversation disappeared
That is the intended behavior: unless you act, nothing is written to storage and everything is erased when the app closes. To keep an exchange, tap “Keep” before leaving.
Dictation does not start
Dictation runs on the device and requires iOS 26 and microphone permission (Settings › DontKeep). iOS downloads the recognition resources for your language once; no audio file is created.
The answer is wrong
Local models are small. They are very good at writing, summarizing and explaining, but they know nothing about current events and can make things up. Always check important information.
Erasing everything
The trash button clears the current conversation and the model’s working memory, without confirmation. A swipe deletes a kept conversation. Deleting the app removes the models and kept conversations.
Meeting mode does not appear
It requires iOS 26 and an iPhone where Apple’s speech recognition runs on the device. On an older iPhone, the app says so when you open the screen. Also check the microphone permission, in Settings › DontKeep.
I bought DontKeep Pro and it is not active
In the app: Settings › DontKeep Pro › “Restore purchases”. The purchase is tied to your Apple account, not to a DontKeep account: it restores on every device using the same account. Refunds are requested from Apple, at reportaproblem.apple.com.
Frequently asked questions
- Is it really offline?
- Yes, once the model is downloaded. The green “Offline · 100% local” indicator confirms it at all times in the app. In airplane mode, everything keeps working.
- What happens when I close the app?
- The conversation is erased from the phone’s memory. It was never written to storage, so there’s nothing to recover.
- What if I want to keep a conversation?
- It’s your call: tap “Keep”. The conversation is then encrypted on the iPhone, excluded from iCloud backups and, if you turn it on, only shown after Face ID (or the iPhone passcode). Without that, nothing is kept.
- Can I hide the app?
- Yes. Since iOS 18, long-press the icon and choose “Hide and Require Face ID”.
- Are the answers as good as ChatGPT?
- Not always. Local models are smaller: great for writing, summarizing and explaining, weaker on current events, which they don’t know about.
- Which iPhones are compatible?
- iOS 17 and later. Best results on iPhone 15 Pro and newer models.
- Is the app paid?
- No. The app, the models and the conversations are free, with no subscription and no ads. There is a single purchase, DontKeep Pro: it removes the 15-minute limit per meeting in meeting mode. It is a one-time purchase, tied to your Apple account.
- Who makes the models?
- Google, with the Gemma family of open models. They run on your iPhone thanks to llama.cpp, an open-source engine.
Requirements
iPhone running iOS 17 or later. Best results on iPhone 15 Pro and newer models. On-device dictation and meeting mode require iOS 26.
Privacy
See the privacy policy. In short: no account, no server, no usage statistics, and your conversations never leave your iPhone.